Does PPGL Rust More Easily Than PPGI After Cutting?
No. Cutting does not automatically make PPGL more prone to rust than PPGI. Nearby zinc-containing coatings can still help protect the exposed edge. PPGI.LTD supplies both options for different applications.
When comparing PPGI vs PPGL cut edge protection, nearby zinc can corrode preferentially, consuming part of the metallic coating while helping protect exposed steel. This local sacrificial protection does not seal the cut: moisture and oxygen can still allow rust. Judge the metallic coating and paint system together for your existing use, rather than ranking PPGI and PPGL from one cut edge.
PPGI vs PPGL Cut Edge Protection FAQ
Is prepainted PPGL more prone to paint blistering at cut edges?
No. Prepainted PPGL is not inherently more prone to paint blistering at cut edges. Pretreatment, primer and paint system affect edge performance; early paint blistering is not a complete comparison of long-term cut-edge corrosion.
